From the Luke E. Hart lessons…“Mary”
*6. Mary’s Immaculate Conception
Non-Catholics (and some Catholics) often confuse the Immaculate Conception with the Virgin Birth. But the Virgin Birth refers to Christ’s being conceived in his mother Mary’s womb without sexual intercourse from a human father, while the Immaculate Conception refers to Mary’s being conceived in her mother Anna’s womb without Original Sin. It is the world, not the Church, that confuses sex with sin here!
“Through the centuries the Church has become ever more aware that Mary,‘full of grace’ through God,134 was redeemed from the moment of her conception. That is what the dogma of the Immaculate Conception confesses. . . . ‘The most Blessed Virgin Mary was, from the first moment of her conception, by a singular grace and privilege of almighty God and by virtue of the merits of Jesus Christ, Savior of the human race, preserved immune from all stain of original sin’135” (Pope Pius IX; C 491).
The dogma was not officially defined until 1854, for it took time for the Church to properly understand and define it after the question had been matured and examined over time. But its substance had been known and believed from the beginning since it was present from the beginning in the original “deposit of faith” like all dogmas, including the Trinity, the Incarnation, and the canon of the New Testament, all of which took centuries before they
were defined infallibly.The truth did not change with time; the Church’s awareness and understanding of it did.
By God’s grace Mary was not only immaculately conceived without “original sin” (which affects every human nature, except hers), but also preserved from all “actual sin” (committed sins) during her life.This total sinlessness of Mary, far from detracting in any way from Christ,was 1) wholly for Christ’s sake and 2) wholly from Christ’s power.
- Mary’s glory was wholly for Christ, for his Incarnation:“To become the mother of the Savior, Mary ‘was enriched by God with gifts appropriate to such a role.’132 The angel Gabriel at the moment of the annunciation salutes her as ‘full of grace’133” (Lk 1:28; C 490). Because “of her vocation [to be Mother of God], it was necessary that she be wholly
borne by God’s grace” (C 490). “ecause his Spirit had prepared her, the Father found the dwelling place where his Son and his Spirit could dwell among men” (C 721).“It was fitting that the mother of him in whom ‘the whole fullness of deity dwells bodily’102 [Col 2:9] should herself be ‘full of grace’” (C 722). It was for Christ’s saving action that Mary was kept holy.
Mary needed Christ for her salvation from original sin. Christ’s redemptive act for her was like preventive medicine in contrast to his saving act for us which is more like curative medicine. It is like one person being saved from a disease by an inoculation to prevent it, and another person being saved from the same disease by an operation to cure it –
by the same doctor.
Clear as mud now, right?

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